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ca45889546
Backed out changeset 0a584a07b696 (bug1523638) Backed out changeset 8c5af2289900 (bug1523638) Backed out changeset 40ed1bd64b09 (bug1523638) Backed out changeset 9a99a0391979 (bug1523638) Backed out changeset 07fb4748b91a (bug1523638) Backed out changeset 49047c3ebae9 (bug1523638) Backed out changeset d606d072126c (bug1523638) Backed out changeset 76dc1937fc77 (bug1523638) Backed out changeset c784c14b5d5d (bug1523638)
120 lines
3.6 KiB
C++
120 lines
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/WindowGlobalActor.h"
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#include "mozJSComponentLoader.h"
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#include "mozilla/Logging.h"
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#include "mozilla/dom/JSWindowActorService.h"
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#include "mozilla/dom/JSWindowActorParent.h"
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#include "mozilla/dom/JSWindowActorChild.h"
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namespace mozilla {
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namespace dom {
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void WindowGlobalActor::ConstructActor(const nsAString& aName,
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JS::MutableHandleObject aActor,
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ErrorResult& aRv) {
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JSWindowActor::Type actorType = GetSide();
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MOZ_ASSERT_IF(actorType == JSWindowActor::Type::Parent,
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XRE_IsParentProcess());
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// Constructing an actor requires a running script, so push an AutoEntryScript
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// onto the stack.
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AutoEntryScript aes(xpc::PrivilegedJunkScope(),
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"WindowGlobalActor construction");
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JSContext* cx = aes.cx();
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RefPtr<JSWindowActorService> actorSvc = JSWindowActorService::GetSingleton();
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if (!actorSvc) {
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aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
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return;
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}
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RefPtr<JSWindowActorProtocol> proto = actorSvc->GetProtocol(aName);
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if (!proto) {
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aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
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return;
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}
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if (!proto->Matches(BrowsingContext(), GetDocumentURI(), GetRemoteType())) {
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aRv.Throw(NS_ERROR_NOT_AVAILABLE);
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return;
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}
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// Load the module using mozJSComponentLoader.
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RefPtr<mozJSComponentLoader> loader = mozJSComponentLoader::Get();
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MOZ_ASSERT(loader);
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JS::RootedObject global(cx);
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JS::RootedObject exports(cx);
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const JSWindowActorProtocol::Sided* side;
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if (actorType == JSWindowActor::Type::Parent) {
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side = &proto->Parent();
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} else {
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side = &proto->Child();
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}
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// Support basic functionally such as SendAsyncMessage and SendQuery for
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// unspecified moduleURI.
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if (!side->mModuleURI) {
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RefPtr<JSWindowActor> actor;
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if (actorType == JSWindowActor::Type::Parent) {
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actor = new JSWindowActorParent();
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} else {
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actor = new JSWindowActorChild();
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}
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JS::Rooted<JS::Value> wrapper(cx);
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if (!ToJSValue(cx, actor, &wrapper)) {
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aRv.NoteJSContextException(cx);
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return;
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}
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MOZ_ASSERT(wrapper.isObject());
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aActor.set(&wrapper.toObject());
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return;
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}
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aRv = loader->Import(cx, side->mModuleURI.ref(), &global, &exports);
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if (aRv.Failed()) {
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return;
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}
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MOZ_ASSERT(exports, "null exports!");
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// Load the specific property from our module.
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JS::RootedValue ctor(cx);
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nsAutoString ctorName(aName);
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ctorName.Append(actorType == JSWindowActor::Type::Parent
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? NS_LITERAL_STRING("Parent")
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: NS_LITERAL_STRING("Child"));
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if (!JS_GetUCProperty(cx, exports, ctorName.get(), ctorName.Length(),
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&ctor)) {
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aRv.NoteJSContextException(cx);
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return;
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}
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// Invoke the constructor loaded from the module.
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if (!JS::Construct(cx, ctor, JS::HandleValueArray::empty(), aActor)) {
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aRv.NoteJSContextException(cx);
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return;
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}
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}
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(WindowGlobalActor)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(WindowGlobalActor)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(WindowGlobalActor)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(WindowGlobalActor)
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} // namespace dom
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} // namespace mozilla
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